Mitsubishi Electric 800 Series Instruction Manual page 140

NOTE
• Set 65520 (HFFF0) as a parameter value "8888" and 65535 (HFFFF) as "9999".
• For the instruction codes HFF, HEC, and HF3, their values once written are held, but cleared to zero when an inverter reset
or all clear is performed.
• When a 32-bit parameter setting or monitor item is read and the value to be read exceeds HFFFF, HFFFF is returned.
Example) When reading the C3 (Pr.902) and C6 (Pr.904) settings from the inverter of station No. 0.
Computer send data
a ENQ 00 FF 0 01 7D
b ENQ 00 EC 0 01 79
c ENQ 00 5E 0 0A
d ENQ 00 60 0 F6
To read/write C3 (Pr.902) or C6 (Pr.904) after inverter reset or parameter clear, execute from (a) again.
 List of calibration parameters
Pr.
C2 (902) Terminal 2 frequency setting bias frequency
C3 (902) Terminal 2 frequency setting bias
125 (903) Terminal 2 frequency setting gain frequency
C4 (903) Terminal 2 frequency setting gain
C5 (904) Terminal 4 frequency setting bias frequency
C6 (904) Terminal 4 frequency setting bias
126 (905) Terminal 4 frequency setting gain frequency
C7 (905) Terminal 4 frequency setting gain
C38 (932) Terminal 4 bias command (torque/magnetic flux)
C39 (932) Terminal 4 bias (torque/magnetic flux)
C40 (933) Terminal 4 gain command (torque/magnetic flux)
C41 (933) Terminal 4 gain (torque/magnetic flux)
C42 (934) PID display bias coefficient
C43 (934) PID display bias analog value
C44 (935) PID display gain coefficient
C45 (935) PID display gain analog value
 Operation command
Instruction Bit
Item
code length
Operation
HFA 8 bits
command
Inverter send data
ACK 00
ACK 00
STX 00 0000 ETX 20
STX 00 0000 ETX 20
Name
Description
b0: Terminal 4 input selection
b1: Forward rotation command
b2: Reverse rotation command
b3: RL (Low-speed operation
*1
command)
b4: RM (Middle-speed operation
*1
command)
b5: RH (High-speed operation
*1
command)
b6: Second function selection
*1
b7: MRS (Output stop)
"H01" is set in the extended link parameter.
"H01" is set in the second parameter changing.
C3 (Pr.902) is read. 0% is read.
C6 (Pr.904) is read. 0% is read.
Instruction code
Read Write Extended
5E DE 1
5E DE 1
5F DF 1
5F DF 1
60 E0 1
60 E0 1
61 E1 1
61 E1 1
20 A0 9
20 A0 9
21 A1 9
21 A1 9
22 A2 9
22 A2 9
23 A3 9
23 A3 9
Example
[Example 1] H02 Forward rotation
b7
0 0 0 0 0 0 1
[Example 2] H00 Stop
b7
0 0 0 0 0 0 0
3.4 Mitsubishi inverter protocol (computer link communication)
Description
b0
0
b0
0
3. RS-485 Communication
1
2
3
4
5
6
7
8
9
10
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